
\begin{table}[H]
\begin{center}
\begin{tabular}{l D{.}{.}{5.5} D{.}{.}{5.3} D{.}{.}{5.5} D{.}{.}{5.5} D{.}{.}{5.4}}
\hline
 & \multicolumn{1}{c}{Linear} & \multicolumn{1}{c}{Quadratic} & \multicolumn{1}{c}{Log} & \multicolumn{1}{c}{Sqrt} & \multicolumn{1}{c}{Spline (df=3)} \\
\hline
intercept                              & 0.16^{*}   & -0.00    & 0.18^{*}   & 0.17^{*}   & 0.17      \\
                                       & (0.08)     & (0.16)   & (0.08)     & (0.08)     & (0.09)    \\
PastAttacks\_Country\_All              & -0.00      & 0.00     &            &            &           \\
                                       & (0.00)     & (0.01)   &            &            &           \\
CasualtiesLess10                       & -0.02      & 0.02     & -0.03      & -0.03      & -0.02     \\
                                       & (0.09)     & (0.16)   & (0.09)     & (0.09)     & (0.09)    \\
Casualties10to100                      & -0.00      & -0.04    & 0.00       & 0.00       & -0.00     \\
                                       & (0.08)     & (0.15)   & (0.08)     & (0.08)     & (0.08)    \\
Casualties100plus                      & 0.05       & 0.10     & 0.05       & 0.05       & 0.05      \\
                                       & (0.07)     & (0.13)   & (0.07)     & (0.07)     & (0.07)    \\
Exp                                    & -0.11      & -0.05    & -0.10      & -0.10      & -0.11     \\
                                       & (0.06)     & (0.09)   & (0.06)     & (0.06)     & (0.06)    \\
NatExp                                 & -0.10      & -0.03    & -0.09      & -0.10      & -0.10     \\
                                       & (0.05)     & (0.08)   & (0.05)     & (0.05)     & (0.05)    \\
ProbSample                             & 0.06       & 0.12     & 0.06       & 0.06       & 0.06      \\
                                       & (0.05)     & (0.07)   & (0.05)     & (0.05)     & (0.05)    \\
Outgroup                               & 0.03       & 0.05     & 0.03       & 0.03       & 0.03      \\
                                       & (0.03)     & (0.05)   & (0.03)     & (0.03)     & (0.03)    \\
Rally                                  & -0.02      & 0.03     & -0.02      & -0.02      & -0.02     \\
                                       & (0.04)     & (0.06)   & (0.04)     & (0.04)     & (0.04)    \\
US                                     & 0.17^{***} & 0.17^{*} & 0.17^{***} & 0.17^{***} & 0.17^{**} \\
                                       & (0.05)     & (0.09)   & (0.05)     & (0.05)     & (0.05)    \\
PastAttacks\_Country\_All$^2$          &            & -0.00    &            &            &           \\
                                       &            & (0.00)   &            &            &           \\
logPast\_W                             &            &          & -0.02      &            &           \\
                                       &            &          & (0.02)     &            &           \\
sqrtPast\_W                            &            &          &            & -0.01      &           \\
                                       &            &          &            & (0.01)     &           \\
ns(PastAttacks\_Country\_All, df = 3)1 &            &          &            &            & 0.00      \\
                                       &            &          &            &            & (0.09)    \\
ns(PastAttacks\_Country\_All, df = 3)2 &            &          &            &            & -0.11     \\
                                       &            &          &            &            & (0.11)    \\
ns(PastAttacks\_Country\_All, df = 3)3 &            &          &            &            & -0.13     \\
                                       &            &          &            &            & (0.10)    \\
\hline
tau.squared                            & 0.00       & 0.00     & 0.00       & 0.00       & 0.00      \\
cochran.qe                             & 36044.93   & 35731.09 & 35935.78   & 36002.32   & 35459.97  \\
p.value.cochran.qe                     & 0.00       & 0.00     & 0.00       & 0.00       & 0.00      \\
cochran.qm                             & 25.93      & 15.41    & 25.38      & 25.62      & 26.10     \\
p.value.cochran.qm                     & 0.00       & 0.16     & 0.00       & 0.00       & 0.01      \\
DF Resid.                              & 713        & 712      & 713        & 713        & 711       \\
Log Likelihood                         & -131.54    & -137.58  & -131.81    & -131.70    & -131.41   \\
Deviance                               & 263.07     & 275.15   & 263.61     & 263.39     & 262.82    \\
AIC                                    & 289.07     & 303.15   & 289.61     & 289.39     & 292.82    \\
BIC                                    & 348.47     & 367.11   & 349.02     & 348.80     & 361.32    \\
AICc                                   & 289.59     & 303.76   & 290.13     & 289.91     & 293.51    \\
nobs                                   & 724        & 724      & 724        & 724        & 724       \\
\hline
\multicolumn{6}{l}{\scriptsize{$^{***}p<0.001$; $^{**}p<0.01$; $^{*}p<0.05$}}
\end{tabular}
\caption{Exposure (PastAttacks\_West\_All) meta-regressions with non-linear specifications.}
\label{tab:attacks_nonlinear}
\end{center}
\end{table}
